Fix strings for USB and HID device picker dialog title.
Fix strings for USB and HID device picker dialog title.

Commit 8b581d8b638951f98c0fb0c0116ac18b355b825e updated these strings
but expected the single vs. other selector to be format parameter {0}
instead of parameter {1} so the strings were broken. Nobody noticed.

BUG=526342

Review URL: https://codereview.chromium.org/1318803007

Cr-Commit-Position: 972c6d2dc6dd5efdad1377c0d224e03eb8f276f7@{#346457}

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